There are two side to every story...
I think there are VERY few people that have actually read a single primary source article on this issue. So to think most of you have already dismissed something based on a dailymail.co.uk article is quite sad...Ironically, as these attacks have grown, the scientific facts have become ever clearer. Climate scientists know the world is warming and human activity -- particularly burning coal and oil -- is the primary driver. The idea of addressing climate change threatens some people in the fossil fuel industry. And a vocal minority of corporate interests and their ideological allies are spending a lot of money to hijack the public debate about climate change.
I call all this the "scientization" of politics. Attacks on science and scientists are an effort to advance a political agenda, not an effort to better understand science or the risks it uncovers. The tobacco industry did it when scientists linked cigarettes to cancer. The lead industry tried to discredit a scientist who found that lead exposure hurt children's cognitive abilities.
In the most infamous episode, somebody stole thousands of e-mails and documents from leading climate researchers, including me. They cherry picked key phrases from the e-mails and published them out of context, like a black-and-white political attack ad with ominous music. Fossil fuel industry-funded groups gleefully spread the e-mails online and badgered the mainstream media into covering the "controversy" they had manufactured.